Thomas Karoff, DO
NPI 1366642142 · Internal Medicine Physician · Mt Kisco, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Karoff, DO is a Internal Medicine Physician provider in Mt Kisco, NY (NPI 1366642142).
Provider details
- NPI number
- 1366642142
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 243062 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,111 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 324 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 224 | $102 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 210 | $147 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 172 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 167 | $8 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 130 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 78 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 500 | 145 |
| Levothyroxine Sodium | 171 | 46 |
| Escitalopram Oxalate | 164 | 60 |
| Amlodipine Besylate | 158 | 49 |
| Lisinopril | 147 | 42 |
| Rosuvastatin Calcium | 118 | 37 |
| Simvastatin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-07-20
- Last updated
- 2017-02-13
Frequently asked questions
- What is Thomas Karoff's NPI number?
- Thomas Karoff's National Provider Identifier (NPI) is 1366642142, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Karoff's specialty?
- Thomas Karoff is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Karoff located?
- Thomas Karoff's practice location on file with NPPES is 110 S. Bedford Rd, Mt Kisco, NY 10549.
- What is Thomas Karoff's phone number?
- The practice phone number listed in the NPPES registry for Thomas Karoff is (914) 241-1050.
- Does Thomas Karoff accept Medicare?
- Thomas Karoff is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Karoff's NPI active?
- Yes — Thomas Karoff's NPI (1366642142) is active in the NPPES registry as of the last update on 2017-02-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.